Hydraulic nozzle tester



F. L. GORMLEY 2,183,189

HYDRAULIC NOZ ZLE TESTER Filed Feb. 28, 1939 2 Sheets-Sheet 1 Dec. 12, 1939. F. L. GORMLEY 3, 8

HYDRAULIC NOZZLE TESTER I I Filed Feb. 28, 1939 2 Sheets-Sheet 2 lrwentof; .Frank 11'. Go rmley,

rammed Dec. 12, 1939 Illinois Frank L. .Gor nley, Chicagmlll assignor to The Buds Company, Hervey, 11]., a corporation of Application February as, rest, Serial No. 258,972 Claims. (our- 5 The present invention relates to hydraulictesting devices particularly adapted for testing the nozzles used in Diesel engines,oil engines, and

the like, the object of the inventiodbeing to D produce a simple compact nozzle tester which may be transported readily and clamped to any fiat surface where its use-is desired.

This object is attained by the mechanism illustrated in the accompanying drawings.

For the purpose of illustrating the invention, one preferred form thereof is illustrated in the drawings, this form having been found to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which the invention consists can be variously arranged and organized, and the invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and described except as required by the scope of the appended claims.

, 0f the drawings:

. Figure 1 represents a vertical section of a hydraulic nozzle tester embodying the principles or the invention, and

Figure 2 represents a vertical section of the same on line 2, 2 on Fig. 1.

Similar characters indicate like parts throughout the several figures oi the drawings.

In the drawings I0 is a casing within which is 39 an oil reservoir I I, the base of the casing i0 having outwardly extending flanges l2 by which said casing may be clamped to a. fiat surface to hold it firmly in position while the device is being operated. At the lower end of the base 19 and com- :5 municatingwith the bottom of the reservoir II is a normally closed opening llll which when opened permits the oil tobe removed from said reservoir. 7

Extending upwardly from the lower wall of lo the casing I0 is a cylindrical projection l3 having a female thread to which is secured a closure I332.

Threaded to the closure Him is a tubular member M, the upper end iii of which extends through 4.3 the cover Illa: of the casing l0 and is threaded to the valve member l6. v i

The tubular' member l4 has a passage l1 extending, the entire length thereof.

- I The cover Illa: of the casing Ill is provided with a filling opening l8 adapted to be closed by the threaded member l9.

- Disposed within and extending downwardly from the opening I8 is a cup-shaped member of fine wire screen.

5 i This screen 20 provides a means for removing all dirt and other foreign substances from the oil when the reservoir II is being filled.

cover Illa: of the casing in is also provided with an air relief valve 2| which may be of any usual construction. As this relief valve forms no secured a pressure gauge 24 which has extending. downwardly therefrom a threaded projection 28' secured to the valve member It.

This projection 25 has a vertical passage 26 in alinement with passage l1 and extending therethrough into the pressure gauge 24 which 'may be of any usual construction.

The tubular member l4 has a passage l1 extending therethrough which is adapted to communicate at its upperend with the passage 26 extending into the pressure gauge 24. The valve member i6 has a lateral projection 29 extending therefrom to the outer threaded end 29 to which is secured a threaded nut 30, the outer end of which is provided with a threaded socket 3| in whichmay'be disposed a nozzle to be tested.

The projection 28 has a passage 32 extending therethrough, the inner end of which communicates with the vertical passage 21 extending through the valve member i6.

Projecting from one end of the casing. III is an ear 33 to which is pivoted at 34 a lever socket 35. This lever socket 35 is movable about the axis of the pivot pin 34 by means of the handle The lever socket 35 has downwardly extending ears 31 in which is mounted the pivot pin 38 extending into a slot 39 in the upper end of a plunger 40 of an oil pump 4i, the housing for which is formed integral with the casing 10.

From the lower end of the chamber'42 beneath the lower end of the tubular member l4 extends an oil passage 44, the outer end of which is adapted to be closed by the relief valve 45.

It is sufiicient to state when the plunger 40 is I moved downwardly oil will be permitted to fiow into compartment 41 from which it will be forced through passages 49 and 44 into the chamber 42 and upwardly through the passage l1 in the tubular member l4, from which it may be discharged into the passage 21 in the valve member l6.

In the chamber 42 is a fine wire screen 50 to prevent sediment in the oil from passing into the passage i! of tubular member l4 and getting into a nozzle while being tested. l

Should any sediment collect in the chamber 42 it may be removed therefrom by unthreading the closing plug 5| in the base of the casing Ill.

The valve member i6 is provided with an adjustable valve stem 52 adapted to close the pas sage 2'! and prevent further admission of oil to the gauge 24.

The nozzles used on Diesel engines are set for certain pressures depending on the size of the engines on which they are to be used.

Ordinarily, about three sizes of such nomle are used and these are set at 1500, 2000, and 2200 pound pressure.

Within each nozzle is a spring and this must be set to stand a certain pressure. For instance, in the case of a nozzle sustaining a 2000 pound pressure, this nozzle would be attached to the testing device by screwing it into the socket 3| shown in the drawings, then with the valve 52 open admitting oil into the pressure gauge 24 the pump 4! would be operated to pump oil from the reservoir ll into the chamber 42 and through the passages I1, 21, 26, into the pressure gauge, and also through the lateral passage 32 into the interior of the nozzle.

If the spring in the nozzle has been properly adjusted when the hand on the gauge 24 reads 2000 pounds, the oil passing through the passage 32 will pass through an opening in the end of the nozzle. This will indicate that the nozzle is satisfactory.

However, it is also desired to test the spring within the nozzle and this is done by closing the valve 52 while the hand of the gauge is indicating a 2000 pound pressure.

With the valve 52 closed and the passage 32 opened, the pump 4| is operated by quick strokes rapidly forcing oil at a greater pressure through the passage 32 against the spring within the nozzle.

In operating the pump 4| at this time the handle 36 is given short quick strokes which will produce on the spring in the nozzle what is termed a shock test.

After this shock test the valve 52 is again opened and a pressure of 2000 pounds applied,

and if under these conditions the spring in the nozzle releases at this pressure, it is in satisfactory condition and ready to be applied to a Diesel engine.

When it is desired to remove the nozzle from the testing device, before such removal the relief valve is opened which releases the pressure in the nozzle so that when said nozzle is removed there will be no oil in the passage 32 to spray over, which obviously would be quite objectionable.

The projection or stud 28 is threaded to the valve member l6 and is stationary.

The nut 30 is double ended, one end being a loose fit for the outer end of the stud 28, while the threaded socket 3! is formed in the opposite end and the nozzle to be tested is loosely fitted to this socket.

The thread on the stud 28 is finer than the thread of the socket 3| and both threads are right handed.

Consequently, when the nozzle is disposed in the socket 3| and the nut 30 is rotated, the inner end of the nozzle will be drawn up in tight contact with the'tapered end 28:: of the stud 20, thus insuring that all oil in passage 32 will enter the nozzle.

A different nut 10 is required for each size of 5 nozzle being tested.

The entire testing device is very compact, is practical in service for the purpose for which it is designed, and may be manufactured at a very reasonable price.

It will be noted that injection nozzles in Diesel or other oil engines must necessarily be kept in proper adjustment in order to obtain the maximum efllciency from the engine.

The present invention provides a means whereby this testing of the nozzles may be accomplished very easily.

It is believed that the operation and many ad vantages of the invention will be understood without further description.

Having thus described my invention, I claim:

1. In a device of the class described, an enclosed oil reservoir, a tubular member extendIrTg upwardly therein with its upper end projecting through the upper wall of the reservoir and provided with a restricted passage therethrough, a valve member secured to the upper end of said tubular member and provided with a vertical passage therethrough and having a laterally extending threaded projection to receive a nozzle to be tested, said projection having extending therethrough a lateral passage communicating with the vertical passage of said valve, 2:. pressure gauge surmounting said valve member and having a passage therefrom communicating with the vertical passage of said valve and adapted to be closed by said valve, and means for pumping oil from said reservoir to the interior of said tubular member.

2. A device as set forth in claim l-in which the 4 lower end of the tubular member communicates with an oil chamber in the lower wall of the reservoir with its upper end threaded to said valve member.

3. A device as set forth in claim 1 in which a relief valve is provided permitting the return of the oil in said tubular member into said reservoir.

4. A device as set forth in claim 1 in which the lower end of the tubular member communicates with an oil chamber in the lower wall of the reservoir with its upper end threaded to said valve member, said chamber being provided with a removable closure in its lower wall.

5. In a device of the class described, a unitary structure including a manually actuated hydraulic pump forming a part of said device and provided with a vertical pipe having a restricted discharge passage therethrough, a pressure gauge, and a valve member secured to the upper end of said pipe between the gauge and pump and provided with one passage to said pressure gauge and a second passage to a tubular projection integral with said valve member and adapted to receive a nozzle having a spring therein, said second passage communicating with the discharge passage from said pump, and said valve member controlling the admission of liquid to the pressure gauge when liquid is forced through said second passage to determine the amount of pressure the spring in said nozzle will sustain.

' V FRANK L. GORMLEY. 

